Monitoring method of wire TV network link signal quality, monitoring module and system

Abstract

The application discloses a monitoring method of wire TV network link signal quality, a monitoring module and a system. The method comprises the following steps: acquiring an optical signal; converting the optical signal into a photocurrent signal; acquiring a RF signal and amplifying the same; combining RF signal paths, demodulating the RF signal to obtain I / Q data; computing a MER value according to the I / Q data, and drawing a constellation graph; and sending the MER value to a network management terminal. Through the monitoring method disclosed by the invention, the network management terminal can acquire digital TV signal MER indexes on various sets of network node equipment from a signal source, head end equipment, transmission network equipment and like full-link equipment, thereby performing monitoring for a long time; and the change of a core link index of any node on the network can be timely sensed, the link transmission quality and the link degradation point are judged, thepotential network fault is identified in advance, and the usability and the maintainability of the network are greatly improved.

Description

Technical field [0001] This application relates to the technical field of signal transmission control, and in particular to a method, a monitoring module and a system for monitoring the signal quality of a cable TV network link. Background technique [0002] With the increasing scale of cable TV networks and the continuous enhancement of functions such as digital TV, how to effectively improve the operational efficiency and reliability of the network has become a problem that network operators must solve. The traditional management method mainly relies on manual management. Once a fault occurs, the administrator can only find the fault point through the user feedback information and the extremely limited management capabilities of the network equipment itself, and then remove the fault through certain means. If the user has no feedback information, Administrators often cannot find faults in time, let alone locate fault points effectively, which will directly cause serious delays ...

AI Technical Summary

Problems solved by technology

[0005] This application provides a monitoring method, monitoring module and system for the signal quality of a cable TV network link to solve the problem that the signal indicators on the network link cannot be monitored in the prior art, and the application combines software and hardware to accurately Effectively monitor the core index MER of cable network digital TV, making a qualitative leap in the level of network management and monitoring

Images